[psiphi]

The Touch screens and Joysticks are big problems on PDAs and smartphones that the older phones never had to deal with... I drop my phone all the time when I'm not using an earpiece... That said, I've had my Apache replaced once in 3 years (about a year ago). I've never had to replace any of my PDAs, but I've not kept any this long before... I've replaced phones before, but usually after about 3 years.